low-wattage
Member
- Location
- Pennsyltucky
New steel building is built - steel framing, all I-beams and purlins, common around here for warehouses, industrial, etc. There is a mechanical room housing electrical service entrance etc., and approx 200' away, a wiring closet for telecom. The wiring closet has PVC out to the manhole at the curb for CATV and phone service; the demarcation will be in the wiring closet. edit - Wiring closet has its own circuit for power for network and communications equipment, but no subpanel.
A bonding jumper is installed from the column nearest the wiring closet, approximately 50' away, to the backboard in the wiring closet. It is #6 stranded uninsulated open conductor, bolted to the flange of column with a screw on lug. In the wiring closet, it is terminated on a clamp on bus bar, looks like an intersystem bridge typically seen at service entrances - a pass through screw on lug for the #6 jumper, and available screw on lugs for the catv and telco.
Obviously a TIA 607 compliant system was not specified or installed, and will be considered. In the mean time, I am concerned with basic compliance and protection. The AHJ has no requirements other than NEC 2008.
Thanks in advance for your thoughts.
A bonding jumper is installed from the column nearest the wiring closet, approximately 50' away, to the backboard in the wiring closet. It is #6 stranded uninsulated open conductor, bolted to the flange of column with a screw on lug. In the wiring closet, it is terminated on a clamp on bus bar, looks like an intersystem bridge typically seen at service entrances - a pass through screw on lug for the #6 jumper, and available screw on lugs for the catv and telco.
Obviously a TIA 607 compliant system was not specified or installed, and will be considered. In the mean time, I am concerned with basic compliance and protection. The AHJ has no requirements other than NEC 2008.
Thanks in advance for your thoughts.